print ()
s=input()
s1=' '


for char in s:
     if char == ' ( ':
         s1+=char


     if char == ' ) ':
         if len (s1)>0:
             if s1 [len (s1) -1] == ' ( ':
                 s1 = s1 [:-1]



          print (s1)

 if len(s1)==0:
     print (' Верная ')
else:
    print (' Неверная ')
